Body temperature changes affect structure and activity of all globular proteins (e.g. enzymes); Endotherms: Can use internal heat source from metabolic process to maintain body temperature and Ectotherms: Rely on external sources
Endotherm: Body temperature remains constant, independent of environmental temperature
Ectotherm: As the environmental temperature increases the body temperature increases (directly proportional)
Endotherm: As environmental temperature decreases, oxygen consumption and aerobic respiration increases (response to maintain a constant body temperature)
Ectotherm: As environmental temperature decreases, so does the body temperature which then plateaus (no physiological mechanism/response)
